US20140290956A1 - High pressure pump - Google Patents
High pressure pump Download PDFInfo
- Publication number
- US20140290956A1 US20140290956A1 US13/852,274 US201313852274A US2014290956A1 US 20140290956 A1 US20140290956 A1 US 20140290956A1 US 201313852274 A US201313852274 A US 201313852274A US 2014290956 A1 US2014290956 A1 US 2014290956A1
- Authority
- US
- United States
- Prior art keywords
- plunger
- combustion chambers
- pistons
- pump assembly
- media
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 43
- 238000005086 pumping Methods 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000001960 triggered effect Effects 0.000 claims abstract description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000010304 firing Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 20
- 239000000446 fuel Substances 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000009969 flowable effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- -1 e.g. Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010618 wire wrap Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/2607—Surface equipment specially adapted for fracturing operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B71/00—Free-piston engines; Engines without rotary main shaft
- F02B71/04—Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby
- F02B71/045—Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby with hydrostatic transmission
Definitions
- Pumps are utilized in the downhole drilling and completions industry for a variety of purposes, notably, the performance of various fluid treatments.
- hydraulic fracturing for example, a fluid or slurry is pumped at high pressures downhole to initiate and force open cracks in a downhole formation in order to promote the production of hydrocarbons from the downhole formation. Due largely to the popularity of hydraulic fracturing and the performance of other downhole fluid treatment operations, the industry always well receives new and alternate pumping systems, particularly where gains in reliability and efficiency can be realized.
- a pump assembly including a plunger in communication with a pumpable media; a plurality of combustion chambers; and a plurality of pistons, each piston associated with one of the combustion chambers, the pistons in communication with the plunger and operatively arranged to together collectively urge the plunger in a pumping direction when the combustion chambers are triggered for displacing the pumpable media with the plunger.
- a method of pumping a media including firing at least one of a plurality of combustion chambers, each combustion chamber associated with a corresponding one of a plurality of pistons; urging, in an actuation direction due to the firing, each of the pistons corresponding to each of the combustion chambers that is fired; exerting a force on a plunger in a pumping direction collectively with each of the pistons that is urged in the actuation direction; moving the plunger in the pumping direction with the force; and pumping a media with the plunger.
- FIG. 1 schematically shows a pump assembly according to one embodiment disclosed herein;
- FIG. 2 schematically shows a cross-section of a combustion chamber that is usable in the pump assembly of FIG. 1 .
- the pumpable media is a fluid or other flowable material, e.g., a plurality of solid particles that together behave in a flowable or fluid-like manner (e.g., proppants), or a combination of the foregoing (e.g., a slurry).
- a fluid or other flowable material e.g., a plurality of solid particles that together behave in a flowable or fluid-like manner (e.g., proppants), or a combination of the foregoing (e.g., a slurry).
- the pumpable media is initially contained in a pump chamber 12 of a pump cylinder 14 and forced out of the chamber 12 via an outlet 16 by movement of a plunger 18 within the pump cylinder 14 .
- cylinder is utilized merely as pistons and plungers conventionally take circular cross-sections, but that any other cross-sectional shape of plunger, piston, housing, and chamber could be utilized.
- the media enters the pump chamber 12 via an inlet 20 when the chamber 12 enlarges due to the plunger 18 moving in an exhaust stroke away from the outlet 16 and the inlet 20 .
- the outlet 16 and the inlet 20 may be equipped with check valves to ensure the media flows in only the desired direction from the inlet 20 into the chamber 12 and out via the outlet 16 .
- the plunger 18 is connected by a rod 22 to a primary piston 24 .
- the rod 22 could be replaced by other couplings, including non-mechanical, e.g., hydraulic, couplings.
- the primary piston 24 is movable within a cylinder 26 , which includes a common chamber 28 that is in fluid communication with a plurality of working chambers 30 of corresponding actuation cylinders 32 .
- Two of the actuation cylinders 32 are shown in FIG. 1 , although it is to be appreciated that any number of actuation cylinders could be included as desired having working chambers in communication with the common chamber 28 .
- Each of the actuation cylinders 32 includes a piston 34 that is reciprocal within the cylinders 32 .
- a combustion chamber 36 is included opposite the working chambers 30 for enabling actuation of the corresponding pistons 34 .
- the pistons 34 are activated by igniting a combustible fluid mixture within the chamber 36 .
- the combustion chamber 36 is shown in more detail in FIG. 2 .
- the combustion chamber 36 is formed by a block 38 and a head 40 of the cylinder 32 , although other housing components could be used.
- the chamber 36 may generally resemble that of a conventional automobile engine.
- the chambers 36 are supplied with a combustible fuel, e.g., hydrocarbon-based fuel, via a fuel injector 42 and air via an air injector 44 , in order to create a combustible mixture.
- a combustible fuel e.g., hydrocarbon-based fuel
- An igniter 46 is provided to fire the chambers 36 by triggering combustion of the combustible mixture.
- An exhaust valve 48 enables the chamber 36 to be emptied of exhaust gases between each combustion cycle.
- the injectors 42 and 44 , igniter 46 , and valve 48 , or combinations thereof, are communicably coupled with and controlled by a control unit 50 .
- the control unit 50 may take the form of a computerized device and may include a memory, a processor or logic unit, sensors for monitoring emissions, performance of the assembly 10 , position of the piston 34 , and any other suitable components for interfacing the control unit 50 with the aforementioned components of the combustion chamber 36 and/or with operators of the pump assembly 10 .
- many current automobile engines have fuel and air injectors, igniters, and/or exhaust valves that are electronically controlled and monitored by a computer device, and any such devices could be used as, for, or with the control unit 50 .
- Combustion causes a sudden expansion of fluids within the chamber 36 , thereby moving the pistons 34 and enlarging the chamber 36 .
- a suitable working fluid e.g., an essentially incompressible liquid
- force exerted on the working fluid from each of the pistons 34 due to combustion will be transferred via the working fluid on the common piston 24 .
- the working fluid in the common chamber 28 in one embodiment is an oil or lubricant for advantageously cooling the cylinders 26 and 32 , lubricating the movement of the pistons 24 and 34 , etc.
- the pumpable media is pumped into a borehole for performance of a downhole treatment, stimulation, or operation, such as actuation of a tool, valve, or sleeve.
- the downhole treatment or operation involves hydraulic fracturing.
- the pump assembly 10 can be in fluid communication with a tubular string run through a borehole. It is to of course be appreciated that the pump assembly 10 could alternatively be in fluid communication with an annulus between the wall of the borehole and the string if desired.
- a zone or interval along a length of the tubular string and the borehole is desired to be treated, e.g., fractured, in order to facilitate the production of hydrocarbons from a downhole formation through which the borehole is drilled.
- One or more screen assemblies may be positioned proximate to the zone for permitting the production of fluids while obstructing the production of sand and debris.
- the zone may be flanked by a set of packer or seal assemblies that deploy or engage against the wall of the borehole for isolating the zone, e.g., thereby enabling high pressure fluid from the pump assembly 10 to be directed into the zone.
- control unit 50 is arranged not only to regulate the operation of the combustion chambers 36 as detailed above, but also to alter operation of the assembly 10 as a whole. In one embodiment, the control unit 50 determines or calculates how many of the combustion chambers 34 will fire, e.g., in response to the measured and/or desired pressure of the pumped media, which may be monitored via sensors disposed with the assembly 10 , with or within the cylinders 14 , 26 , and 32 , located along the tubular string with which the assembly 10 is used, with screen assemblies, etc.
- the control unit 50 can automatically react to sensed conditions and fire or trigger a greater number of combustion chambers as the measured pressure increases, or scale down the number of the combustion chambers that are fired as pressure decreases. In this way, the control unit 50 can enable the assembly 10 to automatically react to changing conditions in order to maintain a high level of efficiency without sacrificing performance.
- Position sensors for the plunger 18 , piston 24 , pistons 34 , etc. may also be communicably coupled with the control unit 50 to assist in the operation of the combustion chambers 36 and/or to determine the number of chambers 36 that are fired for each stroke of the plunger 18 .
- the control unit 50 could also receive input from operators such that the operators are able to change parameters to make the assembly 10 to fire a desired number of combustion chambers 36 , to set or affect the parameters or parameter ranges that the control unit 50 utilizes to determine how many combustion chambers 36 to fire, to set the fuel/air ratio of the combustible mixture provided to the chambers 36 , etc.
- the pistons 34 are not subjected to such solids or debris, and thus will not suffer as much wear as the plunger 18 .
- the pistons 34 can be set to collectively act together to produce a longer stroke length for the plunger 18 than of each individual one of the pistons 34 , to reciprocate multiple times to complete a single stroke of the plunger 18 (the control unit 50 may need to control the status of the inlet 16 in such an embodiment to avoid the in-rush of fluid from interfering with each stroke of the plunger 18 ), etc.
Abstract
Description
- Pumps are utilized in the downhole drilling and completions industry for a variety of purposes, notably, the performance of various fluid treatments. In hydraulic fracturing, for example, a fluid or slurry is pumped at high pressures downhole to initiate and force open cracks in a downhole formation in order to promote the production of hydrocarbons from the downhole formation. Due largely to the popularity of hydraulic fracturing and the performance of other downhole fluid treatment operations, the industry always well receives new and alternate pumping systems, particularly where gains in reliability and efficiency can be realized.
- A pump assembly, including a plunger in communication with a pumpable media; a plurality of combustion chambers; and a plurality of pistons, each piston associated with one of the combustion chambers, the pistons in communication with the plunger and operatively arranged to together collectively urge the plunger in a pumping direction when the combustion chambers are triggered for displacing the pumpable media with the plunger.
- A method of pumping a media, including firing at least one of a plurality of combustion chambers, each combustion chamber associated with a corresponding one of a plurality of pistons; urging, in an actuation direction due to the firing, each of the pistons corresponding to each of the combustion chambers that is fired; exerting a force on a plunger in a pumping direction collectively with each of the pistons that is urged in the actuation direction; moving the plunger in the pumping direction with the force; and pumping a media with the plunger.
- The following descriptions should not be considered limiting in any way. With reference to the accompanying drawings, like elements are numbered alike:
-
FIG. 1 schematically shows a pump assembly according to one embodiment disclosed herein; and -
FIG. 2 schematically shows a cross-section of a combustion chamber that is usable in the pump assembly ofFIG. 1 . - A detailed description of one or more embodiments of the disclosed apparatus and method are presented herein by way of exemplification and not limitation with reference to the Figures.
- Referring now to
FIG. 1 , anassembly 10 is illustrated for enabling a pumpable media to be pumped. By pumpable media it is meant that the media is able to be pumped from one location to another by theassembly 10. For example, in one embodiment, the pumpable media is a fluid or other flowable material, e.g., a plurality of solid particles that together behave in a flowable or fluid-like manner (e.g., proppants), or a combination of the foregoing (e.g., a slurry). - The pumpable media is initially contained in a
pump chamber 12 of apump cylinder 14 and forced out of thechamber 12 via anoutlet 16 by movement of aplunger 18 within thepump cylinder 14. It is to be appreciated that the term cylinder is utilized merely as pistons and plungers conventionally take circular cross-sections, but that any other cross-sectional shape of plunger, piston, housing, and chamber could be utilized. The media enters thepump chamber 12 via aninlet 20 when thechamber 12 enlarges due to theplunger 18 moving in an exhaust stroke away from theoutlet 16 and theinlet 20. Theoutlet 16 and theinlet 20 may be equipped with check valves to ensure the media flows in only the desired direction from theinlet 20 into thechamber 12 and out via theoutlet 16. - The
plunger 18 is connected by arod 22 to aprimary piston 24. As will be better appreciated in view of the below disclosure, therod 22 could be replaced by other couplings, including non-mechanical, e.g., hydraulic, couplings. Theprimary piston 24 is movable within acylinder 26, which includes acommon chamber 28 that is in fluid communication with a plurality ofworking chambers 30 ofcorresponding actuation cylinders 32. Two of theactuation cylinders 32 are shown inFIG. 1 , although it is to be appreciated that any number of actuation cylinders could be included as desired having working chambers in communication with thecommon chamber 28. - Each of the
actuation cylinders 32 includes apiston 34 that is reciprocal within thecylinders 32. Acombustion chamber 36 is included opposite theworking chambers 30 for enabling actuation of thecorresponding pistons 34. In one embodiment, thepistons 34 are activated by igniting a combustible fluid mixture within thechamber 36. For example, one embodiment of thecombustion chamber 36 is shown in more detail inFIG. 2 . In the embodiment shown inFIG. 2 , thecombustion chamber 36 is formed by ablock 38 and ahead 40 of thecylinder 32, although other housing components could be used. Thechamber 36 may generally resemble that of a conventional automobile engine. In the illustrated embodiment, thechambers 36 are supplied with a combustible fuel, e.g., hydrocarbon-based fuel, via afuel injector 42 and air via anair injector 44, in order to create a combustible mixture. Anigniter 46 is provided to fire thechambers 36 by triggering combustion of the combustible mixture. Anexhaust valve 48 enables thechamber 36 to be emptied of exhaust gases between each combustion cycle. - In the illustrated embodiment, the
injectors igniter 46, andvalve 48, or combinations thereof, are communicably coupled with and controlled by acontrol unit 50. Thecontrol unit 50 may take the form of a computerized device and may include a memory, a processor or logic unit, sensors for monitoring emissions, performance of theassembly 10, position of thepiston 34, and any other suitable components for interfacing thecontrol unit 50 with the aforementioned components of thecombustion chamber 36 and/or with operators of thepump assembly 10. For example, many current automobile engines have fuel and air injectors, igniters, and/or exhaust valves that are electronically controlled and monitored by a computer device, and any such devices could be used as, for, or with thecontrol unit 50. - Combustion causes a sudden expansion of fluids within the
chamber 36, thereby moving thepistons 34 and enlarging thechamber 36. This results in thechambers 30 decreasing in size, which results in the pressurization of fluid within thecommon chamber 28 due to aport 52 enabling fluid communication between thecommon chamber 28 and each thechambers 30. By using a suitable working fluid, e.g., an essentially incompressible liquid, in thecommon chamber 28, force exerted on the working fluid from each of thepistons 34 due to combustion will be transferred via the working fluid on thecommon piston 24. By exerting a suitably high force, thepiston 24 will force theplunger 18 to displace the pumpable media out of thechamber 12 to a desired location. The working fluid in thecommon chamber 28 in one embodiment is an oil or lubricant for advantageously cooling thecylinders pistons - In one embodiment, the pumpable media is pumped into a borehole for performance of a downhole treatment, stimulation, or operation, such as actuation of a tool, valve, or sleeve. In a particular embodiment, the downhole treatment or operation involves hydraulic fracturing. For example, the
pump assembly 10 can be in fluid communication with a tubular string run through a borehole. It is to of course be appreciated that thepump assembly 10 could alternatively be in fluid communication with an annulus between the wall of the borehole and the string if desired. In one embodiment, a zone or interval along a length of the tubular string and the borehole is desired to be treated, e.g., fractured, in order to facilitate the production of hydrocarbons from a downhole formation through which the borehole is drilled. One or more screen assemblies (including mesh, wire-wrap, slotted tubulars, fluid permeable foam, etc.) may be positioned proximate to the zone for permitting the production of fluids while obstructing the production of sand and debris. The zone may be flanked by a set of packer or seal assemblies that deploy or engage against the wall of the borehole for isolating the zone, e.g., thereby enabling high pressure fluid from thepump assembly 10 to be directed into the zone. The tubular string may include a cross-over assembly, suitable valves, etc., to enable the pumped media, e.g., a proppant slurry, treatment chemicals, etc., to be pumped into the annulus proximate to the zone in order to fracture the zone or otherwise treat or stimulate the zone. Thepump assembly 10 may be utilized for treating multiple discrete zones (e.g., separated by packer assemblies) in this manner along the length of the borehole. - In one embodiment, the
control unit 50 is arranged not only to regulate the operation of thecombustion chambers 36 as detailed above, but also to alter operation of theassembly 10 as a whole. In one embodiment, thecontrol unit 50 determines or calculates how many of thecombustion chambers 34 will fire, e.g., in response to the measured and/or desired pressure of the pumped media, which may be monitored via sensors disposed with theassembly 10, with or within thecylinders assembly 10 is used, with screen assemblies, etc. That is, with knowledge of the force generated by each of thecombustion chambers 36, thecontrol unit 50 can automatically react to sensed conditions and fire or trigger a greater number of combustion chambers as the measured pressure increases, or scale down the number of the combustion chambers that are fired as pressure decreases. In this way, thecontrol unit 50 can enable theassembly 10 to automatically react to changing conditions in order to maintain a high level of efficiency without sacrificing performance. Position sensors for theplunger 18,piston 24,pistons 34, etc. may also be communicably coupled with thecontrol unit 50 to assist in the operation of thecombustion chambers 36 and/or to determine the number ofchambers 36 that are fired for each stroke of theplunger 18. Thecontrol unit 50 could also receive input from operators such that the operators are able to change parameters to make theassembly 10 to fire a desired number ofcombustion chambers 36, to set or affect the parameters or parameter ranges that thecontrol unit 50 utilizes to determine howmany combustion chambers 36 to fire, to set the fuel/air ratio of the combustible mixture provided to thechambers 36, etc. - It is to be appreciated with respect to the illustrated embodiments that powering a single pump plunger, e.g., the
plunger 18, with multiple combustion chambers, e.g., thechambers 36, benefits in addition to increased pumping pressure, as noted above, can be achieved. For example, if a particulate laden fluid or slurry is utilized as the pumpable media, there is a concern that sand, grit, or other solids could wedge betweenplunger 18 and the wall of thecylinder 14, damaging thecylinder 14, theplunger 18, a dynamic seal positioned therebetween, etc. For this reason, it is desired to minimize the number of strokes that theplunger 18 must take to pump a given amount of media is desired and thus, maximize the length of the strokes. Thepistons 34 are not subjected to such solids or debris, and thus will not suffer as much wear as theplunger 18. Thus, thepistons 34 can be set to collectively act together to produce a longer stroke length for theplunger 18 than of each individual one of thepistons 34, to reciprocate multiple times to complete a single stroke of the plunger 18 (thecontrol unit 50 may need to control the status of theinlet 16 in such an embodiment to avoid the in-rush of fluid from interfering with each stroke of the plunger 18), etc. - While the invention has been described with reference to an exemplary embodiment or embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the claims. Also, in the drawings and the description, there have been disclosed exemplary embodiments of the invention and, although specific terms may have been employed, they are unless otherwise stated used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention therefore not being so limited. Moreover, the use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another. Furthermore, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.
Claims (21)
Priority Applications (1)
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US13/852,274 US9377012B2 (en) | 2013-03-28 | 2013-03-28 | High pressure pump |
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US13/852,274 US9377012B2 (en) | 2013-03-28 | 2013-03-28 | High pressure pump |
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US20140290956A1 true US20140290956A1 (en) | 2014-10-02 |
US9377012B2 US9377012B2 (en) | 2016-06-28 |
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US13/852,274 Active 2034-08-11 US9377012B2 (en) | 2013-03-28 | 2013-03-28 | High pressure pump |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019132907A1 (en) * | 2017-12-28 | 2019-07-04 | Halliburton Energy Services, Inc. | Injection valve for injecting randomly sized and shaped items into high pressure lines |
US11131172B2 (en) * | 2018-06-22 | 2021-09-28 | China University Of Mining And Technology | Method for extracting gas by fracturing coal seam through combination of hydraulic slotting and multi-stage combustion impact wave |
WO2024011035A1 (en) * | 2022-07-08 | 2024-01-11 | Proppant Delivery Systems, LLC | Proppant conveyance system for fracturing operations |
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US3182895A (en) * | 1962-12-21 | 1965-05-11 | Panhard & Levassor | Synchronizing devices for twin-cylinder heat engines having two opposed pistons in each cylinder |
US5297631A (en) * | 1993-04-07 | 1994-03-29 | Fleet Cementers, Inc. | Method and apparatus for downhole oil well production stimulation |
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US3260213A (en) | 1961-08-01 | 1966-07-12 | Eickmann Karl | Combustion engine for conveying a hydraulic pressure medium |
US3149773A (en) | 1963-10-21 | 1964-09-22 | George F Cudahy | Apparatus for compressing fluids |
US3986796A (en) | 1972-07-06 | 1976-10-19 | Moiroux Auguste F | Direct action compressor fitted with a one-piece piston |
US3995974A (en) | 1974-09-18 | 1976-12-07 | Herron Allen R | Internal combustion assisted hydraulic engine |
US4140440A (en) | 1974-12-30 | 1979-02-20 | Hydraulic Engine Development Group | Internal combustion piston engine-driven piston pump with hydraulic pressure return of combustion piston from BDC |
US4599861A (en) | 1985-05-13 | 1986-07-15 | Beaumont Richard W | Internal combustion hydraulic engine |
FI94456C (en) | 1993-12-28 | 1995-09-11 | Sampower Oy | Multi-piston hydraulic pump for free piston engine |
US5702238A (en) | 1996-02-06 | 1997-12-30 | Daniel Cecil Simmons | Direct drive gas compressor with vented distance piece |
US6293231B1 (en) | 1999-09-29 | 2001-09-25 | Ingo Valentin | Free-piston internal combustion engine |
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DE10249524B4 (en) | 2002-10-23 | 2005-12-29 | Minibooster Hydraulics A/S | Fluid supply unit, in particular hydraulic supply unit |
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Patent Citations (2)
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US3182895A (en) * | 1962-12-21 | 1965-05-11 | Panhard & Levassor | Synchronizing devices for twin-cylinder heat engines having two opposed pistons in each cylinder |
US5297631A (en) * | 1993-04-07 | 1994-03-29 | Fleet Cementers, Inc. | Method and apparatus for downhole oil well production stimulation |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019132907A1 (en) * | 2017-12-28 | 2019-07-04 | Halliburton Energy Services, Inc. | Injection valve for injecting randomly sized and shaped items into high pressure lines |
US11371331B2 (en) | 2017-12-28 | 2022-06-28 | Halliburton Energy Services, Inc. | Injection valve for injecting randomly sized and shaped items into high pressure lines |
US11131172B2 (en) * | 2018-06-22 | 2021-09-28 | China University Of Mining And Technology | Method for extracting gas by fracturing coal seam through combination of hydraulic slotting and multi-stage combustion impact wave |
WO2024011035A1 (en) * | 2022-07-08 | 2024-01-11 | Proppant Delivery Systems, LLC | Proppant conveyance system for fracturing operations |
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US9377012B2 (en) | 2016-06-28 |
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